DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:20:45 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 226/Tom Green VRSN: W 226-907/Grape Creek ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 19,448,196 0.9770 19,906,035 20 677 .028329615 2 A 19,410,095 1.0252 18,932,984 11 396 .003189065 3 A 19,413,717 0.9941 19,528,938 15 292 .004304342 4 A 19,341,209 1.0202 18,958,252 27 190 .004726069 5 D3 8,405,602 0.9911 8,481,084 10 1,072 .000428392 6 L1 1,464,934 0.9567 1,531,237 9 76 .005840827 7 L1 1,536,917 0.9992 1,538,148 6 24 .003092281 8 L1 1,696,103 0.9667 1,754,529 4 8 .020397054 RANDOM TOTALS: 90,716,773 90,631,207 102 2,735 CATG D1 EXCEPTION VALUES: 5,426,220 5,064,386 CATG L1 EXCEPTION VALUES: 1,902,237 1,891,644 TOTAL TEST VALUES (4): 98,045,230 97,587,237 MARGIN OF ERROR PERCENT: 5.0000002 MARGIN OF ERROR VALUE: 4,879,362 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 92,707,875 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 98,045,230 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 102,466,599 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 102,704,940 (SEE ISD SUMMARY WORKSHEET) SOURCES: (1) SEE STRATIFIED CATEGORY WORKSHEET REPORTS PTS236, PTS430 (2) NUMBER OF PARCELS SAMPLED BY STAFF (3) TOTAL CATEGORY PARCELS FROM STRATIFICATION REPORT APPRAISAL ROLL, OR SELF-REPORT (4) INCLUDES ANY PARCELS IN A, B, C, D3, F1, G1, G2,OR L1 MARKED AS EXCEPTION PROPERTIES (5) UNSTUDIED CATEGORIES AND SUB-CATEGORIES WERE NOT INCLUDED IN THE CONFIDENCE INTERVAL VALUES
